Tapco 6912 Owner's Manual page 9

Some folks think that if they use a power
amplifier whose power rating is below
the maximum power-handling rating of
the loudspeaker, then they can't possibly
damage the loudspeaker. But if the amplifier
is driven into clipping, even a lower power
amplifier can damage the loudspeaker.
The bottom line is that to prevent
damage to the loudspeakers, you must
have a properly operating sound system.
Proper operation of a sound system includes
being aware of the types of audio signals
being reproduced, controlling the output
levels accordingly, and operating all the
devices in the system so that no clipping
occurs within the signal chain.
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